/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:15:44,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:15:44,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:15:44,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:15:44,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:15:44,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:15:44,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:15:44,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:15:44,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:15:44,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:15:44,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:15:44,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:15:44,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:15:44,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:15:44,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:15:44,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:15:44,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:15:44,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:15:44,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:15:44,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:15:44,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:15:44,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:15:44,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:15:44,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:15:44,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:15:44,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:15:44,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:15:44,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:15:44,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:15:44,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:15:44,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:15:44,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:15:44,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:15:44,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:15:44,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:15:44,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:15:44,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:15:44,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:15:44,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:15:44,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:15:44,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:15:44,131 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:15:44,154 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:15:44,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:15:44,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:15:44,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:15:44,156 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:15:44,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:15:44,157 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:15:44,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:15:44,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:15:44,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:15:44,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:15:44,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:15:44,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:15:44,158 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:15:44,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:15:44,158 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:15:44,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:15:44,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:15:44,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:15:44,159 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:15:44,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:15:44,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:15:44,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:15:44,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:15:44,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:15:44,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:15:44,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:15:44,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:15:44,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:15:44,161 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:15:44,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:15:44,477 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:15:44,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:15:44,482 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:15:44,482 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:15:44,483 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:15:44,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9da1f609/d6160a97cd0746c1b3adcb3f78dbf464/FLAG7c40723a0 [2020-10-12 20:15:45,098 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:15:45,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:15:45,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9da1f609/d6160a97cd0746c1b3adcb3f78dbf464/FLAG7c40723a0 [2020-10-12 20:15:45,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9da1f609/d6160a97cd0746c1b3adcb3f78dbf464 [2020-10-12 20:15:45,434 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:15:45,436 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:15:45,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:15:45,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:15:45,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:15:45,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:15:45" (1/1) ... [2020-10-12 20:15:45,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@396e528d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:45, skipping insertion in model container [2020-10-12 20:15:45,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:15:45" (1/1) ... [2020-10-12 20:15:45,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:15:45,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:15:45,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:15:45,993 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:15:46,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:15:46,151 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:15:46,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:46 WrapperNode [2020-10-12 20:15:46,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:15:46,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:15:46,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:15:46,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:15:46,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:46" (1/1) ... [2020-10-12 20:15:46,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:46" (1/1) ... [2020-10-12 20:15:46,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:46" (1/1) ... [2020-10-12 20:15:46,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:46" (1/1) ... [2020-10-12 20:15:46,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:46" (1/1) ... [2020-10-12 20:15:46,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:46" (1/1) ... [2020-10-12 20:15:46,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:46" (1/1) ... [2020-10-12 20:15:46,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:15:46,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:15:46,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:15:46,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:15:46,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:15:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:15:46,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:15:46,303 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:15:46,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:15:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:15:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:15:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 20:15:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:15:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:15:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:15:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:15:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:15:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:15:46,304 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:15:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:15:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:15:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:15:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:15:46,305 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:15:46,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:15:46,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:15:47,458 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:15:47,459 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:15:47,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:15:47 BoogieIcfgContainer [2020-10-12 20:15:47,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:15:47,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:15:47,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:15:47,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:15:47,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:15:45" (1/3) ... [2020-10-12 20:15:47,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d91afbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:15:47, skipping insertion in model container [2020-10-12 20:15:47,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:46" (2/3) ... [2020-10-12 20:15:47,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d91afbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:15:47, skipping insertion in model container [2020-10-12 20:15:47,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:15:47" (3/3) ... [2020-10-12 20:15:47,475 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:15:47,486 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:15:47,494 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:15:47,509 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:15:47,536 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:15:47,536 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:15:47,536 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:15:47,537 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:15:47,537 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:15:47,537 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:15:47,537 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:15:47,538 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:15:47,562 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states. [2020-10-12 20:15:47,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 20:15:47,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:47,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:15:47,577 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:47,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:47,584 INFO L82 PathProgramCache]: Analyzing trace with hash 907107443, now seen corresponding path program 1 times [2020-10-12 20:15:47,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:47,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128682555] [2020-10-12 20:15:47,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:48,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:48,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:48,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:48,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:48,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:48,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:50,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:50,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:52,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:52,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:52,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:52,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:53,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:53,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 20:15:53,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:15:53,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 20:15:53,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:53,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:15:53,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:15:53,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 20:15:53,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 20:15:53,505 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:15:53,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:15:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:53,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:53,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:53,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:15:53,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:15:53,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:15:53,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:53,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:15:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:15:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:15:53,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:15:53,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128682555] [2020-10-12 20:15:53,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:15:53,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:15:53,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294600846] [2020-10-12 20:15:53,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:15:53,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:15:53,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:15:53,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:15:53,615 INFO L87 Difference]: Start difference. First operand 252 states. Second operand 5 states. [2020-10-12 20:15:56,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:15:56,051 INFO L93 Difference]: Finished difference Result 701 states and 1220 transitions. [2020-10-12 20:15:56,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:15:56,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-12 20:15:56,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:15:56,084 INFO L225 Difference]: With dead ends: 701 [2020-10-12 20:15:56,084 INFO L226 Difference]: Without dead ends: 464 [2020-10-12 20:15:56,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:15:56,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-12 20:15:56,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 462. [2020-10-12 20:15:56,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-10-12 20:15:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 675 transitions. [2020-10-12 20:15:56,203 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 675 transitions. Word has length 105 [2020-10-12 20:15:56,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:15:56,204 INFO L479 AbstractCegarLoop]: Abstraction has 462 states and 675 transitions. [2020-10-12 20:15:56,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:15:56,204 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 675 transitions. [2020-10-12 20:15:56,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 20:15:56,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:56,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:15:56,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:15:56,215 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:56,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:56,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1427546979, now seen corresponding path program 1 times [2020-10-12 20:15:56,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:56,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485647201] [2020-10-12 20:15:56,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:56,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:56,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:56,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:56,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:56,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:56,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:57,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:01,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:01,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 20:16:01,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:16:01,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 20:16:01,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:01,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:01,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 20:16:01,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:16:01,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:01,571 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:16:01,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:01,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:01,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:01,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:01,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:01,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:16:01,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:01,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:01,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:01,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:01,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:16:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:01,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485647201] [2020-10-12 20:16:01,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:01,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:01,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665595026] [2020-10-12 20:16:01,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:01,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:01,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:01,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:01,643 INFO L87 Difference]: Start difference. First operand 462 states and 675 transitions. Second operand 5 states. [2020-10-12 20:16:02,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:02,756 INFO L93 Difference]: Finished difference Result 890 states and 1297 transitions. [2020-10-12 20:16:02,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:02,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-12 20:16:02,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:02,760 INFO L225 Difference]: With dead ends: 890 [2020-10-12 20:16:02,760 INFO L226 Difference]: Without dead ends: 462 [2020-10-12 20:16:02,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:16:02,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-10-12 20:16:02,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2020-10-12 20:16:02,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-10-12 20:16:02,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 673 transitions. [2020-10-12 20:16:02,790 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 673 transitions. Word has length 106 [2020-10-12 20:16:02,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:02,790 INFO L479 AbstractCegarLoop]: Abstraction has 462 states and 673 transitions. [2020-10-12 20:16:02,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:02,791 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 673 transitions. [2020-10-12 20:16:02,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 20:16:02,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:02,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:02,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:16:02,794 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:02,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:02,794 INFO L82 PathProgramCache]: Analyzing trace with hash -91171648, now seen corresponding path program 1 times [2020-10-12 20:16:02,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:02,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035153182] [2020-10-12 20:16:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:02,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:02,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:02,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:03,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:03,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:03,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:03,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:05,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:07,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:07,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 20:16:07,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:16:07,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 20:16:07,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:07,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:07,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:16:07,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 20:16:07,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:08,170 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:16:08,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:08,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:08,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:08,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:08,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:08,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:16:08,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:08,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:08,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:08,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035153182] [2020-10-12 20:16:08,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:08,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:08,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864623509] [2020-10-12 20:16:08,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:08,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:08,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:08,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:08,232 INFO L87 Difference]: Start difference. First operand 462 states and 673 transitions. Second operand 5 states. [2020-10-12 20:16:09,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:09,461 INFO L93 Difference]: Finished difference Result 971 states and 1433 transitions. [2020-10-12 20:16:09,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:09,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-12 20:16:09,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:09,469 INFO L225 Difference]: With dead ends: 971 [2020-10-12 20:16:09,469 INFO L226 Difference]: Without dead ends: 694 [2020-10-12 20:16:09,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:16:09,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-10-12 20:16:09,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 691. [2020-10-12 20:16:09,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-12 20:16:09,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 999 transitions. [2020-10-12 20:16:09,513 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 999 transitions. Word has length 107 [2020-10-12 20:16:09,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:09,513 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 999 transitions. [2020-10-12 20:16:09,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:09,514 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 999 transitions. [2020-10-12 20:16:09,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:16:09,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:09,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:09,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:16:09,517 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:09,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:09,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1681057240, now seen corresponding path program 1 times [2020-10-12 20:16:09,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:09,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260210281] [2020-10-12 20:16:09,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:09,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:09,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:09,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:09,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:09,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:09,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:10,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:13,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:13,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:13,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:13,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:14,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:14,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-12 20:16:14,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:16:14,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:16:14,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:14,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:14,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:16:14,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 20:16:14,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:16:14,943 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:16:14,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:14,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:14,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:14,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:14,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:14,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:16:14,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:14,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:14,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:14,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:14,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:16:15,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:15,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260210281] [2020-10-12 20:16:15,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:15,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:15,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499940327] [2020-10-12 20:16:15,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:15,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:15,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:15,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:15,039 INFO L87 Difference]: Start difference. First operand 691 states and 999 transitions. Second operand 5 states. [2020-10-12 20:16:16,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:16,996 INFO L93 Difference]: Finished difference Result 1964 states and 2820 transitions. [2020-10-12 20:16:16,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:16,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:16:16,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:17,006 INFO L225 Difference]: With dead ends: 1964 [2020-10-12 20:16:17,006 INFO L226 Difference]: Without dead ends: 1314 [2020-10-12 20:16:17,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:16:17,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2020-10-12 20:16:17,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1312. [2020-10-12 20:16:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2020-10-12 20:16:17,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1872 transitions. [2020-10-12 20:16:17,099 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1872 transitions. Word has length 109 [2020-10-12 20:16:17,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:17,099 INFO L479 AbstractCegarLoop]: Abstraction has 1312 states and 1872 transitions. [2020-10-12 20:16:17,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:17,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1872 transitions. [2020-10-12 20:16:17,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 20:16:17,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:17,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:17,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:16:17,103 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:17,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:17,103 INFO L82 PathProgramCache]: Analyzing trace with hash -953074635, now seen corresponding path program 1 times [2020-10-12 20:16:17,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:17,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442088134] [2020-10-12 20:16:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:17,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:17,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:17,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:17,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:17,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:17,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:18,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:18,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:19,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:19,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:19,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:22,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:22,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 20:16:22,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:16:22,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 20:16:22,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:22,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:22,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:16:22,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:16:22,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:22,430 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:16:22,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:22,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:22,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:22,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:22,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:22,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:16:22,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:22,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:22,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:22,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:16:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:22,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442088134] [2020-10-12 20:16:22,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:22,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:22,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017825778] [2020-10-12 20:16:22,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:22,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:22,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:22,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:22,522 INFO L87 Difference]: Start difference. First operand 1312 states and 1872 transitions. Second operand 5 states. [2020-10-12 20:16:24,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:24,429 INFO L93 Difference]: Finished difference Result 3771 states and 5349 transitions. [2020-10-12 20:16:24,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:24,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-12 20:16:24,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:24,445 INFO L225 Difference]: With dead ends: 3771 [2020-10-12 20:16:24,448 INFO L226 Difference]: Without dead ends: 2498 [2020-10-12 20:16:24,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:16:24,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states. [2020-10-12 20:16:24,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 2496. [2020-10-12 20:16:24,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2496 states. [2020-10-12 20:16:24,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3506 transitions. [2020-10-12 20:16:24,686 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3506 transitions. Word has length 110 [2020-10-12 20:16:24,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:24,690 INFO L479 AbstractCegarLoop]: Abstraction has 2496 states and 3506 transitions. [2020-10-12 20:16:24,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:24,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3506 transitions. [2020-10-12 20:16:24,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 20:16:24,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:24,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:24,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:16:24,699 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:24,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:24,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1929019194, now seen corresponding path program 1 times [2020-10-12 20:16:24,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:24,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179218797] [2020-10-12 20:16:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:24,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:24,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:24,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:24,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:24,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:25,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:25,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:25,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:25,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:25,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:26,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:26,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:29,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:29,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:16:29,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:16:29,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:16:29,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:16:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:16:29,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:29,964 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:16:29,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:29,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:29,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:29,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:29,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:29,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:16:29,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:29,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:29,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:29,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:29,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:30,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179218797] [2020-10-12 20:16:30,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:30,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:30,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395317159] [2020-10-12 20:16:30,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:30,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:30,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:30,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:30,013 INFO L87 Difference]: Start difference. First operand 2496 states and 3506 transitions. Second operand 5 states. [2020-10-12 20:16:31,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:31,828 INFO L93 Difference]: Finished difference Result 6133 states and 8647 transitions. [2020-10-12 20:16:31,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:31,829 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-12 20:16:31,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:31,849 INFO L225 Difference]: With dead ends: 6133 [2020-10-12 20:16:31,849 INFO L226 Difference]: Without dead ends: 4053 [2020-10-12 20:16:31,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:16:31,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4053 states. [2020-10-12 20:16:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4053 to 4043. [2020-10-12 20:16:32,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4043 states. [2020-10-12 20:16:32,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4043 states to 4043 states and 5602 transitions. [2020-10-12 20:16:32,112 INFO L78 Accepts]: Start accepts. Automaton has 4043 states and 5602 transitions. Word has length 111 [2020-10-12 20:16:32,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:32,113 INFO L479 AbstractCegarLoop]: Abstraction has 4043 states and 5602 transitions. [2020-10-12 20:16:32,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:32,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4043 states and 5602 transitions. [2020-10-12 20:16:32,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:16:32,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:32,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:32,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:16:32,121 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:32,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:32,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1412433670, now seen corresponding path program 1 times [2020-10-12 20:16:32,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:32,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166625949] [2020-10-12 20:16:32,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:32,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:32,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:32,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:32,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:32,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:32,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:33,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:33,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:33,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:37,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:37,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:16:37,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:16:37,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:16:37,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:37,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:16:37,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:16:37,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 20:16:37,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:37,437 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:16:37,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:37,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:37,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:37,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:37,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:37,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:16:37,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:37,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:16:37,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:37,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:16:37,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:37,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166625949] [2020-10-12 20:16:37,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:37,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:16:37,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694791184] [2020-10-12 20:16:37,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:16:37,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:37,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:16:37,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:16:37,512 INFO L87 Difference]: Start difference. First operand 4043 states and 5602 transitions. Second operand 9 states. [2020-10-12 20:16:37,747 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-12 20:16:40,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:40,681 INFO L93 Difference]: Finished difference Result 19387 states and 28722 transitions. [2020-10-12 20:16:40,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 20:16:40,681 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2020-10-12 20:16:40,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:40,749 INFO L225 Difference]: With dead ends: 19387 [2020-10-12 20:16:40,749 INFO L226 Difference]: Without dead ends: 16837 [2020-10-12 20:16:40,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2020-10-12 20:16:40,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16837 states. [2020-10-12 20:16:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16837 to 8679. [2020-10-12 20:16:41,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8679 states. [2020-10-12 20:16:41,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8679 states to 8679 states and 12270 transitions. [2020-10-12 20:16:41,679 INFO L78 Accepts]: Start accepts. Automaton has 8679 states and 12270 transitions. Word has length 112 [2020-10-12 20:16:41,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:41,680 INFO L479 AbstractCegarLoop]: Abstraction has 8679 states and 12270 transitions. [2020-10-12 20:16:41,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:16:41,680 INFO L276 IsEmpty]: Start isEmpty. Operand 8679 states and 12270 transitions. [2020-10-12 20:16:41,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:16:41,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:41,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:41,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:16:41,692 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:41,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:41,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1582738415, now seen corresponding path program 1 times [2020-10-12 20:16:41,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:41,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720135803] [2020-10-12 20:16:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:41,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:41,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:41,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:41,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:41,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:41,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:42,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:46,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:46,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:16:46,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:16:46,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:16:46,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:46,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:16:46,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:16:46,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 20:16:46,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:46,980 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:16:46,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:46,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:47,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:47,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:47,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:47,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:16:47,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:47,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:16:47,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:16:47,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:47,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720135803] [2020-10-12 20:16:47,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:47,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:16:47,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783149650] [2020-10-12 20:16:47,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:16:47,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:47,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:16:47,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:16:47,047 INFO L87 Difference]: Start difference. First operand 8679 states and 12270 transitions. Second operand 9 states. [2020-10-12 20:16:47,292 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:16:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:49,579 INFO L93 Difference]: Finished difference Result 22007 states and 32750 transitions. [2020-10-12 20:16:49,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:16:49,580 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2020-10-12 20:16:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:49,617 INFO L225 Difference]: With dead ends: 22007 [2020-10-12 20:16:49,618 INFO L226 Difference]: Without dead ends: 15477 [2020-10-12 20:16:49,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-12 20:16:49,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15477 states. [2020-10-12 20:16:50,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15477 to 7375. [2020-10-12 20:16:50,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7375 states. [2020-10-12 20:16:50,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7375 states to 7375 states and 10520 transitions. [2020-10-12 20:16:50,363 INFO L78 Accepts]: Start accepts. Automaton has 7375 states and 10520 transitions. Word has length 112 [2020-10-12 20:16:50,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:50,364 INFO L479 AbstractCegarLoop]: Abstraction has 7375 states and 10520 transitions. [2020-10-12 20:16:50,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:16:50,364 INFO L276 IsEmpty]: Start isEmpty. Operand 7375 states and 10520 transitions. [2020-10-12 20:16:50,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:16:50,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:50,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:50,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:16:50,372 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:50,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:50,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1306441466, now seen corresponding path program 1 times [2020-10-12 20:16:50,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:50,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026820037] [2020-10-12 20:16:50,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:50,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:50,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:50,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:50,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:50,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:50,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:52,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:52,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:55,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:55,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:16:55,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:16:55,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 20:16:55,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:16:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 20:16:55,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:55,643 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:16:55,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:55,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:55,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:55,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:55,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:55,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:16:55,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:55,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:55,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:55,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026820037] [2020-10-12 20:16:55,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:55,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:55,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929027803] [2020-10-12 20:16:55,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:55,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:55,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:55,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:55,679 INFO L87 Difference]: Start difference. First operand 7375 states and 10520 transitions. Second operand 5 states. [2020-10-12 20:16:57,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:57,058 INFO L93 Difference]: Finished difference Result 12983 states and 18499 transitions. [2020-10-12 20:16:57,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:57,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-12 20:16:57,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:57,071 INFO L225 Difference]: With dead ends: 12983 [2020-10-12 20:16:57,071 INFO L226 Difference]: Without dead ends: 5644 [2020-10-12 20:16:57,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:16:57,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2020-10-12 20:16:57,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 5644. [2020-10-12 20:16:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5644 states. [2020-10-12 20:16:57,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5644 states to 5644 states and 8024 transitions. [2020-10-12 20:16:57,581 INFO L78 Accepts]: Start accepts. Automaton has 5644 states and 8024 transitions. Word has length 112 [2020-10-12 20:16:57,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:57,581 INFO L479 AbstractCegarLoop]: Abstraction has 5644 states and 8024 transitions. [2020-10-12 20:16:57,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:57,581 INFO L276 IsEmpty]: Start isEmpty. Operand 5644 states and 8024 transitions. [2020-10-12 20:16:57,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:16:57,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:57,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:57,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:16:57,587 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:57,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:57,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1348188548, now seen corresponding path program 1 times [2020-10-12 20:16:57,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:57,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071753771] [2020-10-12 20:16:57,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:57,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:57,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:57,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:57,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:58,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:58,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:02,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:02,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 20:17:02,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:17:02,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:17:02,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:17:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:17:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 20:17:02,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:02,871 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:17:02,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:02,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:02,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:02,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:02,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:02,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:17:02,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:02,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:02,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:02,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:02,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:02,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071753771] [2020-10-12 20:17:02,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:02,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:17:02,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903048162] [2020-10-12 20:17:02,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:17:02,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:02,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:17:02,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:17:02,908 INFO L87 Difference]: Start difference. First operand 5644 states and 8024 transitions. Second operand 5 states. [2020-10-12 20:17:05,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:05,232 INFO L93 Difference]: Finished difference Result 14512 states and 20676 transitions. [2020-10-12 20:17:05,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:17:05,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-12 20:17:05,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:05,252 INFO L225 Difference]: With dead ends: 14512 [2020-10-12 20:17:05,252 INFO L226 Difference]: Without dead ends: 9221 [2020-10-12 20:17:05,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:17:05,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9221 states. [2020-10-12 20:17:06,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9221 to 9218. [2020-10-12 20:17:06,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9218 states. [2020-10-12 20:17:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9218 states to 9218 states and 12962 transitions. [2020-10-12 20:17:06,073 INFO L78 Accepts]: Start accepts. Automaton has 9218 states and 12962 transitions. Word has length 113 [2020-10-12 20:17:06,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:06,073 INFO L479 AbstractCegarLoop]: Abstraction has 9218 states and 12962 transitions. [2020-10-12 20:17:06,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:17:06,074 INFO L276 IsEmpty]: Start isEmpty. Operand 9218 states and 12962 transitions. [2020-10-12 20:17:06,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 20:17:06,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:06,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:06,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:17:06,082 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:06,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:06,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1001970766, now seen corresponding path program 1 times [2020-10-12 20:17:06,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:06,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120199041] [2020-10-12 20:17:06,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:06,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:06,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:06,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:06,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:06,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:07,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:07,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:07,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:11,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:11,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:17:11,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:17:11,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:17:11,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:11,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:17:11,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 20:17:11,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 20:17:11,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:11,380 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:17:11,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:11,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:11,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:11,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:11,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:11,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:17:11,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:11,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:11,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:11,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120199041] [2020-10-12 20:17:11,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:11,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:17:11,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068056482] [2020-10-12 20:17:11,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:17:11,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:11,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:17:11,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:17:11,436 INFO L87 Difference]: Start difference. First operand 9218 states and 12962 transitions. Second operand 5 states. [2020-10-12 20:17:12,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:12,895 INFO L93 Difference]: Finished difference Result 14396 states and 20416 transitions. [2020-10-12 20:17:12,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:17:12,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-12 20:17:12,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:12,906 INFO L225 Difference]: With dead ends: 14396 [2020-10-12 20:17:12,906 INFO L226 Difference]: Without dead ends: 7782 [2020-10-12 20:17:12,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:17:12,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7782 states. [2020-10-12 20:17:13,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7782 to 7779. [2020-10-12 20:17:13,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7779 states. [2020-10-12 20:17:13,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7779 states to 7779 states and 10922 transitions. [2020-10-12 20:17:13,525 INFO L78 Accepts]: Start accepts. Automaton has 7779 states and 10922 transitions. Word has length 114 [2020-10-12 20:17:13,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:13,525 INFO L479 AbstractCegarLoop]: Abstraction has 7779 states and 10922 transitions. [2020-10-12 20:17:13,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:17:13,526 INFO L276 IsEmpty]: Start isEmpty. Operand 7779 states and 10922 transitions. [2020-10-12 20:17:13,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 20:17:13,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:13,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:13,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:17:13,530 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:13,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:13,530 INFO L82 PathProgramCache]: Analyzing trace with hash -577923740, now seen corresponding path program 1 times [2020-10-12 20:17:13,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:13,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605159842] [2020-10-12 20:17:13,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:13,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:13,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:13,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:13,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:13,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:13,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:13,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:13,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:16,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:16,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:16,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:17,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:17,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:17,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:18,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:18,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:17:18,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:17:18,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:17:18,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:17:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:17:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 20:17:18,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:18,833 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:17:18,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:18,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:18,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:18,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:18,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:18,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:17:18,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:18,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:17:18,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:18,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:17:18,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:18,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:18,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605159842] [2020-10-12 20:17:18,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:18,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:17:18,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196464545] [2020-10-12 20:17:18,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:17:18,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:18,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:17:18,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:17:18,882 INFO L87 Difference]: Start difference. First operand 7779 states and 10922 transitions. Second operand 9 states. [2020-10-12 20:17:19,137 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:17:22,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:22,345 INFO L93 Difference]: Finished difference Result 27573 states and 40390 transitions. [2020-10-12 20:17:22,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:17:22,345 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 115 [2020-10-12 20:17:22,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:22,367 INFO L225 Difference]: With dead ends: 27573 [2020-10-12 20:17:22,367 INFO L226 Difference]: Without dead ends: 21215 [2020-10-12 20:17:22,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-12 20:17:22,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21215 states. [2020-10-12 20:17:23,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21215 to 12509. [2020-10-12 20:17:23,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12509 states. [2020-10-12 20:17:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12509 states to 12509 states and 17609 transitions. [2020-10-12 20:17:23,420 INFO L78 Accepts]: Start accepts. Automaton has 12509 states and 17609 transitions. Word has length 115 [2020-10-12 20:17:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:23,420 INFO L479 AbstractCegarLoop]: Abstraction has 12509 states and 17609 transitions. [2020-10-12 20:17:23,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:17:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand 12509 states and 17609 transitions. [2020-10-12 20:17:23,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 20:17:23,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:23,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:23,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:17:23,426 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:23,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:23,426 INFO L82 PathProgramCache]: Analyzing trace with hash 640787095, now seen corresponding path program 1 times [2020-10-12 20:17:23,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:23,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679734304] [2020-10-12 20:17:23,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:23,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:23,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:23,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:23,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:23,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:23,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:23,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:23,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:26,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:26,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:27,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:27,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:28,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:28,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:17:28,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:17:28,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:17:28,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:17:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:17:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 20:17:28,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:28,678 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:17:28,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:28,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:28,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:28,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:28,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:28,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:17:28,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:28,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:28,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679734304] [2020-10-12 20:17:28,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:28,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:17:28,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514239424] [2020-10-12 20:17:28,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:17:28,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:28,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:17:28,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:17:28,708 INFO L87 Difference]: Start difference. First operand 12509 states and 17609 transitions. Second operand 5 states. [2020-10-12 20:17:28,931 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-12 20:17:31,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:31,714 INFO L93 Difference]: Finished difference Result 21644 states and 30413 transitions. [2020-10-12 20:17:31,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:17:31,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-12 20:17:31,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:31,729 INFO L225 Difference]: With dead ends: 21644 [2020-10-12 20:17:31,729 INFO L226 Difference]: Without dead ends: 12479 [2020-10-12 20:17:31,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:17:31,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12479 states. [2020-10-12 20:17:32,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12479 to 12477. [2020-10-12 20:17:32,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12477 states. [2020-10-12 20:17:32,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12477 states to 12477 states and 17482 transitions. [2020-10-12 20:17:32,756 INFO L78 Accepts]: Start accepts. Automaton has 12477 states and 17482 transitions. Word has length 115 [2020-10-12 20:17:32,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:32,757 INFO L479 AbstractCegarLoop]: Abstraction has 12477 states and 17482 transitions. [2020-10-12 20:17:32,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:17:32,757 INFO L276 IsEmpty]: Start isEmpty. Operand 12477 states and 17482 transitions. [2020-10-12 20:17:32,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:17:32,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:32,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:32,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:17:32,763 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:32,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:32,764 INFO L82 PathProgramCache]: Analyzing trace with hash -790474286, now seen corresponding path program 1 times [2020-10-12 20:17:32,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:32,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401837766] [2020-10-12 20:17:32,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:32,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:32,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:32,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:32,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:32,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:32,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:33,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:34,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:34,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:37,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:37,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 20:17:37,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:17:37,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:17:37,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:37,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:17:37,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:17:37,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 20:17:37,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:38,071 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:17:38,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:38,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:38,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:38,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:38,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:38,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:17:38,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:38,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:17:38,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:38,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:17:38,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:38,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:38,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401837766] [2020-10-12 20:17:38,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:38,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:17:38,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275555879] [2020-10-12 20:17:38,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:17:38,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:38,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:17:38,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:17:38,122 INFO L87 Difference]: Start difference. First operand 12477 states and 17482 transitions. Second operand 9 states. [2020-10-12 20:17:38,374 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:17:43,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:43,740 INFO L93 Difference]: Finished difference Result 47784 states and 68499 transitions. [2020-10-12 20:17:43,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:17:43,740 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-10-12 20:17:43,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:43,784 INFO L225 Difference]: With dead ends: 47784 [2020-10-12 20:17:43,784 INFO L226 Difference]: Without dead ends: 36518 [2020-10-12 20:17:43,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-12 20:17:43,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36518 states. [2020-10-12 20:17:45,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36518 to 19928. [2020-10-12 20:17:45,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19928 states. [2020-10-12 20:17:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19928 states to 19928 states and 27840 transitions. [2020-10-12 20:17:45,736 INFO L78 Accepts]: Start accepts. Automaton has 19928 states and 27840 transitions. Word has length 116 [2020-10-12 20:17:45,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:45,736 INFO L479 AbstractCegarLoop]: Abstraction has 19928 states and 27840 transitions. [2020-10-12 20:17:45,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:17:45,737 INFO L276 IsEmpty]: Start isEmpty. Operand 19928 states and 27840 transitions. [2020-10-12 20:17:45,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:17:45,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:45,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:45,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:17:45,749 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:45,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:45,750 INFO L82 PathProgramCache]: Analyzing trace with hash 940786931, now seen corresponding path program 1 times [2020-10-12 20:17:45,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:45,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604583957] [2020-10-12 20:17:45,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:45,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:45,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:45,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:45,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:45,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:45,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:46,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:46,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:46,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:50,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:50,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 20:17:50,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:17:50,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4463 [2020-10-12 20:17:50,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:50,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:17:50,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:17:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:17:50,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:50,460 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:17:50,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:50,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:50,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:50,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:50,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:50,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:17:50,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:50,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:50,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:50,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:50,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:50,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:50,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604583957] [2020-10-12 20:17:50,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:50,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:17:50,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610264558] [2020-10-12 20:17:50,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:17:50,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:50,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:17:50,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:17:50,489 INFO L87 Difference]: Start difference. First operand 19928 states and 27840 transitions. Second operand 5 states. [2020-10-12 20:17:50,700 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-12 20:17:54,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:54,359 INFO L93 Difference]: Finished difference Result 30162 states and 42226 transitions. [2020-10-12 20:17:54,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:17:54,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-12 20:17:54,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:54,381 INFO L225 Difference]: With dead ends: 30162 [2020-10-12 20:17:54,382 INFO L226 Difference]: Without dead ends: 19930 [2020-10-12 20:17:54,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:17:54,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19930 states. [2020-10-12 20:17:56,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19930 to 19928. [2020-10-12 20:17:56,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19928 states. [2020-10-12 20:17:56,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19928 states to 19928 states and 27780 transitions. [2020-10-12 20:17:56,209 INFO L78 Accepts]: Start accepts. Automaton has 19928 states and 27780 transitions. Word has length 116 [2020-10-12 20:17:56,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:56,209 INFO L479 AbstractCegarLoop]: Abstraction has 19928 states and 27780 transitions. [2020-10-12 20:17:56,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:17:56,209 INFO L276 IsEmpty]: Start isEmpty. Operand 19928 states and 27780 transitions. [2020-10-12 20:17:56,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 20:17:56,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:56,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:56,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:17:56,217 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:56,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:56,217 INFO L82 PathProgramCache]: Analyzing trace with hash 531365048, now seen corresponding path program 1 times [2020-10-12 20:17:56,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:56,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494127329] [2020-10-12 20:17:56,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:56,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:56,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:56,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:56,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:56,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:57,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:57,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:17:57,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:17:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1087 [2020-10-12 20:17:57,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:17:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 20:17:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:17:57,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:57,530 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:17:57,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:57,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:57,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:57,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:57,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:57,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:17:57,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:57,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:57,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:57,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:57,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:57,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494127329] [2020-10-12 20:17:57,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:57,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:17:57,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982286338] [2020-10-12 20:17:57,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:17:57,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:57,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:17:57,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:17:57,556 INFO L87 Difference]: Start difference. First operand 19928 states and 27780 transitions. Second operand 4 states. [2020-10-12 20:18:01,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:01,484 INFO L93 Difference]: Finished difference Result 43920 states and 63101 transitions. [2020-10-12 20:18:01,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:18:01,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-10-12 20:18:01,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:01,511 INFO L225 Difference]: With dead ends: 43920 [2020-10-12 20:18:01,511 INFO L226 Difference]: Without dead ends: 25697 [2020-10-12 20:18:01,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:18:01,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25697 states. [2020-10-12 20:18:04,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25697 to 24919. [2020-10-12 20:18:04,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24919 states. [2020-10-12 20:18:04,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24919 states to 24919 states and 35940 transitions. [2020-10-12 20:18:04,133 INFO L78 Accepts]: Start accepts. Automaton has 24919 states and 35940 transitions. Word has length 117 [2020-10-12 20:18:04,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:04,133 INFO L479 AbstractCegarLoop]: Abstraction has 24919 states and 35940 transitions. [2020-10-12 20:18:04,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:18:04,133 INFO L276 IsEmpty]: Start isEmpty. Operand 24919 states and 35940 transitions. [2020-10-12 20:18:04,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 20:18:04,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:04,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:04,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:18:04,139 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:04,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:04,139 INFO L82 PathProgramCache]: Analyzing trace with hash 494086008, now seen corresponding path program 1 times [2020-10-12 20:18:04,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:04,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738029574] [2020-10-12 20:18:04,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:04,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:04,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:04,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:04,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:04,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 20:18:04,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:18:04,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-12 20:18:04,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:18:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 20:18:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:18:04,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:04,706 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:18:04,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:04,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:04,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:04,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:04,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:04,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:18:04,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:04,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:04,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:04,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:04,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:04,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738029574] [2020-10-12 20:18:04,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:04,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:18:04,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504114041] [2020-10-12 20:18:04,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:18:04,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:04,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:18:04,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:18:04,732 INFO L87 Difference]: Start difference. First operand 24919 states and 35940 transitions. Second operand 4 states. [2020-10-12 20:18:09,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:09,937 INFO L93 Difference]: Finished difference Result 57596 states and 84849 transitions. [2020-10-12 20:18:09,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:18:09,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-12 20:18:09,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:09,988 INFO L225 Difference]: With dead ends: 57596 [2020-10-12 20:18:09,988 INFO L226 Difference]: Without dead ends: 34409 [2020-10-12 20:18:10,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:18:10,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34409 states. [2020-10-12 20:18:13,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34409 to 33399. [2020-10-12 20:18:13,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33399 states. [2020-10-12 20:18:13,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33399 states to 33399 states and 49122 transitions. [2020-10-12 20:18:13,728 INFO L78 Accepts]: Start accepts. Automaton has 33399 states and 49122 transitions. Word has length 120 [2020-10-12 20:18:13,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:13,729 INFO L479 AbstractCegarLoop]: Abstraction has 33399 states and 49122 transitions. [2020-10-12 20:18:13,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:18:13,729 INFO L276 IsEmpty]: Start isEmpty. Operand 33399 states and 49122 transitions. [2020-10-12 20:18:13,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:18:13,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:13,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:13,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:18:13,733 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:13,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:13,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1929255369, now seen corresponding path program 1 times [2020-10-12 20:18:13,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:13,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085065451] [2020-10-12 20:18:13,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:13,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:13,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:14,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:14,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:18:14,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:18:14,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1214 [2020-10-12 20:18:14,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:14,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:18:14,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-12 20:18:14,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:18:14,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:15,188 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:18:15,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:15,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:15,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:15,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:15,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:15,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:18:15,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:15,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:15,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:15,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:15,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:15,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:15,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085065451] [2020-10-12 20:18:15,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:15,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:18:15,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176009279] [2020-10-12 20:18:15,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:18:15,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:15,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:18:15,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:18:15,218 INFO L87 Difference]: Start difference. First operand 33399 states and 49122 transitions. Second operand 4 states. [2020-10-12 20:18:22,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:22,549 INFO L93 Difference]: Finished difference Result 86317 states and 127783 transitions. [2020-10-12 20:18:22,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:18:22,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-12 20:18:22,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:22,617 INFO L225 Difference]: With dead ends: 86317 [2020-10-12 20:18:22,617 INFO L226 Difference]: Without dead ends: 54594 [2020-10-12 20:18:22,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:18:22,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54594 states. [2020-10-12 20:18:28,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54594 to 51292. [2020-10-12 20:18:28,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51292 states. [2020-10-12 20:18:28,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51292 states to 51292 states and 75623 transitions. [2020-10-12 20:18:28,546 INFO L78 Accepts]: Start accepts. Automaton has 51292 states and 75623 transitions. Word has length 123 [2020-10-12 20:18:28,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:28,547 INFO L479 AbstractCegarLoop]: Abstraction has 51292 states and 75623 transitions. [2020-10-12 20:18:28,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:18:28,547 INFO L276 IsEmpty]: Start isEmpty. Operand 51292 states and 75623 transitions. [2020-10-12 20:18:28,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 20:18:28,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:28,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:28,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:18:28,551 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:28,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:28,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1958912683, now seen corresponding path program 1 times [2020-10-12 20:18:28,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:28,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818469332] [2020-10-12 20:18:28,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:28,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:28,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:29,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:30,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:32,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:32,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:32,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:18:32,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:18:32,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3863 [2020-10-12 20:18:32,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:32,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 20:18:32,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-12 20:18:32,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 20:18:32,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:33,141 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:18:33,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:33,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:33,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:33,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:33,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:33,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:18:33,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:33,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:33,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:33,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:33,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818469332] [2020-10-12 20:18:33,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:33,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-10-12 20:18:33,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076913534] [2020-10-12 20:18:33,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 20:18:33,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:33,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 20:18:33,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-12 20:18:33,188 INFO L87 Difference]: Start difference. First operand 51292 states and 75623 transitions. Second operand 21 states. [2020-10-12 20:18:33,618 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-12 20:18:34,682 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-12 20:18:34,847 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-12 20:18:49,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:49,758 INFO L93 Difference]: Finished difference Result 122856 states and 181490 transitions. [2020-10-12 20:18:49,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 20:18:49,759 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 126 [2020-10-12 20:18:49,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:49,927 INFO L225 Difference]: With dead ends: 122856 [2020-10-12 20:18:49,927 INFO L226 Difference]: Without dead ends: 97510 [2020-10-12 20:18:49,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=306, Invalid=1176, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 20:18:50,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97510 states. [2020-10-12 20:18:56,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97510 to 51540. [2020-10-12 20:18:56,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51540 states. [2020-10-12 20:18:56,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51540 states to 51540 states and 75919 transitions. [2020-10-12 20:18:56,347 INFO L78 Accepts]: Start accepts. Automaton has 51540 states and 75919 transitions. Word has length 126 [2020-10-12 20:18:56,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:56,347 INFO L479 AbstractCegarLoop]: Abstraction has 51540 states and 75919 transitions. [2020-10-12 20:18:56,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 20:18:56,347 INFO L276 IsEmpty]: Start isEmpty. Operand 51540 states and 75919 transitions. [2020-10-12 20:18:56,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 20:18:56,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:56,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:56,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:18:56,352 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:56,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:56,353 INFO L82 PathProgramCache]: Analyzing trace with hash -740201848, now seen corresponding path program 1 times [2020-10-12 20:18:56,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:56,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910439677] [2020-10-12 20:18:56,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:56,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:56,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:56,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:56,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:18:56,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:18:56,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-10-12 20:18:56,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:18:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:18:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 20:18:56,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:57,480 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 20:18:57,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:57,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:57,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:57,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:57,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:57,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:18:57,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:57,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:57,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:57,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:57,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:57,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910439677] [2020-10-12 20:18:57,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:57,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 20:18:57,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132031907] [2020-10-12 20:18:57,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:18:57,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:57,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:18:57,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:18:57,546 INFO L87 Difference]: Start difference. First operand 51540 states and 75919 transitions. Second operand 11 states. [2020-10-12 20:18:57,793 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 180